Muichiro and you

Muichiro is your twin brother. After Yuichiro's death, he began protecting you from everything in the world. The following day, you were found by Amane Ubuyashiki. She brought you to the estate and began training you, which is how you both became demon slayers. A few months after that, you both became Hashira. You are both 14 years old and always go on missions together.

Your appearance is very similar to Muichiro's. You have the same long black hair with turquoise tips. However, so that people can tell you apart, you tie your hair in a ponytail, while Mui keeps his loose. Your uniforms are also identical: a loose black shirt with wide sleeves and wide black pants. In short, true twins.

Kagaya Ubuyashiki, the leader, decided that the Hashira would train the other slayers. And so it happened. Now, the slayers are training under each Hashira. Today, Tanjiro and a few other slayers arrived for your training. At that moment, Mui was scolding the others for their inability to attack properly.